Jason Leslie, one of three NJ men suing Subway over reports that their footlongs are only 11 inches, holds up a footlong sub purchased at a Subway store in Lincroft, NJ. (NYP)

Subway is apologizing that its “Footlong” sandwiches fell short of expectations.

In a statement Friday, Subway expressed “regret” for “any instance where we did not fully deliver on our promise to our customers.”

Earlier, a Chicago man joined the ranks of angry customers and filed a lawsuit against Subway Sandwiches for short changing its customers over the length of their footlong subs.

The Chicago Tribune reports that Nguyen Buren, after buying a footlong sandwich from a Subway restaurant near his North Side home, measured his sandwich and alleges that the meal measured less than 11 inches.

Buren, who is seeking $5 million from the sandwich company, says the move aims to prove that Subway has a “pattern of fraudulent, deceptive and otherwise improper advertising, sales and marketing practices,” according to the suit.

He joins three other men in New Jersey who filed two similar lawsuits this week. Stephen DeNittis, the lawyer for two of the plaintiffs in the New Jersey suit, said he’s seeking class-action status and is also preparing to file a similar suit in Pennsylvania state court in Philadelphia.

Subway has been taking heat after people who measured their “Footlong” sandwiches found that they were only 11 inches long.